nvidia-340.46-jessie-trusty-3.16.6-tinycore is now available in the prebuilt repo. Import and load it and also graphics-3.16.6-tinycore and xorg-all, and then in console mode issue the below commands:

sudo modprobe drmsudo modprobe nvidiasudo nvidia-xconfig

The last command will create a file /etc/X11/xorg.conf, add it to your backup. Also, you may need to load the kernel modules drm and nvidia manually after each boot, I add the below commands to my /opt/bootsync.sh:

I made them so I can use Nvidia with dCore-jessie and dCore-trusty, I use and test all the dCores that are available and I like a decent screen resolution. And by uploading them, someone else out there who has Nvidia can use them too, some folks have stated a preference for the older dCore releases because of older hardware or similar reasons.